Automatic data backup unit



FIG. 1 is a front perspective view of an automatic data backup unitshowing our new design;

FIG. 2 is a reduced top plan view thereof;

FIG. 3 is a reduced bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a side elevational view thereof the opposite side is identicalin appearance.

The ornamental design for an automatic data backup unit, as shown anddescribed.